UNEMAT

Brazil
Brazil
SEARCH FILTERS
Time filter
Source Type

Geron L.J.V.,Mato Grosso State University | Mexia A.A.,Mato Grosso State University | Garcia J.,Mato Grosso State University | Da Silva M.M.,UNEMAT | Zeoula L.M.,State University of Maringá
Semina:Ciencias Agrarias | Year: 2012

The objective was evaluate the levels of concentrate supplementation (0.0%, 0.5%, 1.0% and 1.5% of body weight - BW) consisting of cottonseed with ground corn (CSGC) in proportion 50% each in lambs finished on pasture (Grass Marandu) slaughtered at 31.7 kg BW, on average daily gain (ADG), days of supplementation (DS) and cost of production in the dry season. We used 20 lambs with initial BW 19 ± 0.5 kg in four treatments. CSGC supplementation was provided in stalls separated by level of supplementation the eighteen hours daily. We used a completely randomized design to determine ADG and DS lambs supplemented with different levels of CSGC. The data of ADG and DS were evaluated by regression analysis considering 5% significance. The different levels of supplementation CSGC influenced quadratic (p < 0.05) ADG and DS lambs on pasture. The level of supplementation CSGC to 1.0% BW in lambs finished at pasture in the dry season had the best value of total lucre for the warm carcass of U$ 9,585.00. It was observed that the level of 0.0% BW of concentrate supplementation had the lesser total expenditure amounting to U$ 7,317.82 in relation to other levels of supplementation. It was found that best value of net revenue per month the of U$ 419.75 was obtained for lambs finished on pasture supplemented with a level of 1.0% BW of concentrate containing CSGC. Thus, conclude that lambs finished at pasture can be supplemented with the level of 1.0% BW of CSGC which improves ADG, reduces the DS beyond present the lucre best net/month for this activity.


Pessoa S.P.M.,Mato Grosso State University | Galvanin E.A.S.,UNEMAT | Kreitlow J.P.,Brazilian National Council for Scientific and Technological Development | Neves S.M.A.S.,UNEMAT | And 2 more authors.
Revista Arvore | Year: 2013

This study analyzed spatial and temporal land use changes in the Middle Paraguay River Interbasin-MT, Brazil using Landsat images from 1991, 2001 and 2011. Images were geo-referenced, classified and processed using Spring software, and thematic classes were edited and quantified using ArcGis software. Seven map classes were identified, and native vegetation, pasture and sugarcane were the most significant ones. The results showed changes in all classes during the past 20 years, primarily a 22.89% decrease of native vegetation, a 58.42% increase in pasture and 490.26% increase of sugarcane monoculture. We verified land use conflicts, mostly in riparian areas, which may negatively influence Interbasin and, consequently, Pantanal conservation in the State of Mato Grosso, Brazil.


This paper describes the identification and quantification of land use changes in the Córrego do Bezerro Vermelho basin, Tangará da Serra, MT, using Landsat images from 1984 and 2011. Images were geo-referenced, classified, and processed by Spring software, and thematic classes were edited and quantified using ArcGis software. The Anthropic Transformation Index was applied to determine the degree of anthropization of the creek. Five classes were identified: forest cover, secondary vegetation, agriculture, pasture, and water bodies. The results indicated a decrease in the class percentiles: 35.35% of forest cover; 11,78% of pastures; and 100% of secondary vegetation, all related to a 248.75% increase in agriculture. The findings of this study indicated that the landscape was drastically altered due to an increase in the Anthropic Transformation Index from 4,75 to 5.88 between 1984 and 2011. Thus, the creek, which that was classified as a regular class in 1984, passed to a degraded class in 2011, due to anthropogenic activities associated with agricultural expansion.


Roboredo D.,Mato Grosso State University | Maia J.C.S.,UFMT | de Oliveira O.J.,Federal University of Minas Gerais | Roque C.G.,UNEMAT
Engenharia Agricola | Year: 2010

Soil compaction is a problem that interferes in root growth and crop production. This study was conducted in the experimental station of Centro Federal de Educação Tecnológica of Cuiabá (CEFET), in Santo Antonio do Leverger - MT, Brazil. The aim was to evaluate the cone index of the Distrophic Red Latosol in function of different water levels in two depths, by using a constant speed penetrometer and an impact one, correlating them with the soil density. The design was made of randomized blocks with eight treatments and five replications, arranged by split plots, with four bands of soil water content in the plots: range 1 (0.1883 to 0.2354 m3 m-3); range 2 (0.2355 to 0.2544 m3 m-3); range 3 (0.2545 to 0.2702 m3 m-3) and range 4 (0.2703 to 0.3177 m3 m-3), and two depths of sampling like subplots (0.05 to 0.10 m and 0.15 to 0.20 m). From the results it was found that: i) the penetrometers showed significant positive correlation with the soil density; ii) the impact penetrometer presented the highest soil strength.


Paglarini C.S.,UNEMAT | da Silva F.S.,UNEMAT | Porto A.G.,UNEMAT | Piasson D.,UNEMAT | dos Santos P.,University of Campinas
Revista Brasileira de Engenharia Agricola e Ambiental | Year: 2013

The sorption isotherms are of great importance for predicting drying and storage of a product. Hysteresis is a phenomenon that occurs due to the difference between the curves of adsorption and desorption. This study aimed to analyse the influence of temperature on sorption isotherms and hysteresis of mango pulp manteiga variety. The isotherms were determined by the static method with the use of different acid concentrations. The samples were submitted to temperatures of 20, 30, 40 and 50 °C and water activity ranging from 4.3 to 88.8% until the equilibrium moisture content. Six mathematical models for the sorption isotherms (GAB, BET, Halsey, Henderson-Thompson, Oswin and Luikov) were analysed and adjusted to the experimental data using nonlinear regression. The hysteresis was calculated as the area between the curves of adsorption and desorption. According to the obtained results, the GAB model was the one that favored the best fit to the equilibrium isotherms of mango. The area of the hysteresis decreased 51% between temperatures of 20 and 50 °C.


Silva D.R.X.,UNEMAT | Ignotti E.,UNEMAT | Reinaldo S.-S.,ENSP FIOCRUZ | De Souza Hacon S.,Fundacao Osvaldo Cruz
Revista Panamericana de Salud Publica/Pan American Journal of Public Health | Year: 2010

Objective. To analyze the association between social and environmental indicators and the Hansen's disease new case detection rate (HNCDR) in the Brazilian Amazon. Methods. This ecological study was based on the new cases of Hansen's disease reported to the Brazilian Disease Surveillance System SINAN in 2006. Analyses were performed considering 105 micro-regions formed by adjacent municipalities with economic and social similarities. HNCDRs per 10 000 people were calculated. Independent variables were total area deforested (km2) in each micro-region until 2006; proportion of people living in households with rudimentary septic tanks; proportion of people living in households with water supply from wells; and human development index (HDI) in 2000. Local empirical Bayes smoothing was applied to HNCDR. Analyses were carried out to determined correlations and differences between means (analysis of variance) for a significance level of 5%. The Kernel technique was used to investigate the geographic distribution of events of interest for all the study indicators. Results. A positive correlation was observed between HNCDR and total deforested area (r = 0.50; P < 0.000) and percent of households with rudimentary septic tanks (r = 0.49; P < 0.000). HDI was inversely correlated with HNCDR: the higher the HDI, the lower the HNCDR (r = -0.36; P < 0.000). Considering the entire region, proportion of households with water from wells was not associated with NCDR. Conclusions. The Hansen's disease new case detection rate, which reflects the magnitude of disease, is associated with social conditions and land settlement practices in the Brazilian Amazon.


Seabra Junior S.,UNEMAT | Pereira A.S.,UNEMAT | Araujo K.L.,UNEMAT
Horticultura Brasileira | Year: 2014

The Chinese cabbage is a vegetable with high nutritional value. The choice for adapted genotypes to local conditions is important to provide success in its cultivation. Thereby, we evaluated the performance of Chinese cabbage cultivars grown under high temperature conditions. The experiment was carried out in the Universidade Estadual do Mato Grosso, in Cáceres, Mato Grosso state, Brazil, from April 8thto June 23rd, 2011. The experimental design was randomized blocks with five replications. Seven cultivars were evaluated (Granat, Michihilli, Kyoto, Seijin F1 Kinjitsu, AF 74 and AF 66). We evaluated the number of bolted plants, productivity (PT) (t/ha), weight of head (g/plant), head diameter (cm), head height (cm), stem length (cm), plant height (cm), number of leaves of the skirt, and compactness. We found no statistical difference regarding productivity. AF 66 showed a better performance for head production. Seijin presented the highest head diameter (13.2 cm). Plant height results were inversely proportional to the head diameter. Cultivar Michihilli had the highest average value for stem length (17.4 cm), considereing 9.1% of plants flowered on the day of harvest. For head compactness we obtained a score of 4.3 for the cultivar AF 66. ‘Kyoto’ averaged 15 discarded leaves regarding the number of leaves of the skirt. Among the studied cultivars, AF 66 presented the best result, also showing good adaptation to the hot climate of Caceres. © 2014 Sociedade de Olericultura do Brasil. All rights reserved.


Nunes M.C.M.,UNEMAT | Cassol E.A.,Federal University of Rio Grande do Sul
Revista Brasileira de Engenharia Agricola e Ambiental | Year: 2011

The sediment particle size distribution depends on soil type and texture. This study had the objective to evaluate the sediment yield by interrill soil erosion in three Oxisols of Rio Grande do Sul state, Brazil: Rhodic Hapludox (LVaf and LVdf) and a Typic Hapludox (LVd), of different textural classes, by simulated rainfall events in laboratory. Experimental plot with test area of 0.36 m 2 and 0.09 m m-1 slope was used. Simulated rainfall with mean intensity of 88 mm h -1 and duration of 90 min was applied in three replications on three oxisols. Sediment particles leaving the experimental plots were collected in a set of sieves. The distribution of sediment diameter varied as the soil texture. The sediment yielded by interrill soil erosion had individual particles and aggregates smaller than those in the original soil. Most of the sediment yielded by interrill soil erosion at LVdf soil was in the class diameter from 9.51 to 4.76 mm whereas in LVaf was from 4.76 to 2.00 mm and in LVd was from 1.00 to 0.25 mm. The original LVdf and LVaf soils present higher clay, organic carbon and iron oxides contents and greater aggregate water stability than the LVd soil, and this probably explains the differences among size classes of sediment yielded by interrill soil erosion.


de Lalla J.G.,São Paulo State University | Laura V.A.,Embrapa Gado de Corte | Junior S.S.,UNEMAT | Cardoso A.I.I.,São Paulo State University
Horticultura Brasileira | Year: 2010

The objective of this work was to estimate general (GCA) and specific combining ability (SCA) and heterosis of lines and populations of Japanese cucumber using a topcross. We obtained 16 experimental hybrids crossing two test populations (Yoshinari, TY, and Natsusuzumi, TN, F2 population) and eight S5 lines obtained from Hokuho commercial hybrid. The Hokuho hybrid F1 was also evaluated, totalizing 27 treatments. The experimental design used was randomized block, with four replicates and four plants per plot. Weight of total and commercial fruits, total number of fruits, number of commercial fruits, percentage of commercial fruits and average weight of commercial fruits were evaluated. Yoshinari population (TY) presented, on average, better combining ability with lines of Hokuho. Line L7 presented the highest positive values of GCA for most of evaluated characteristics. Hybrids H1Y and H1N, with line L1 as one parental, showed higher values for SCA with the test populations for most of evaluated characteristics, while the hybrids with line L5 (H5Y and H5N) showed the smallest values. Population Yoshinari F2 showed greater potential to obtain lines for crossings with lines of Hokuho, in order to obtain hybrid with high yielding potential. Heterosis was positive for most evaluated characteristics.


de Santana C.T.C.,São Paulo State University | Santi A.,UFMT FAMEV | Dallacort R.,UNEMAT | Santos M.L.,IFMS | de Menezes C.B.,Vanguarda do Brazil S.A
Revista Ciencia Agronomica | Year: 2012

In order to study the behavior of three lettuce cultivars (Júlia, Tainá e Grandes Lagos) in four doses of filter cake (0; 10; 20 and 40 ton ha -1), in greenhouses (tunnel) was conducted an experiment at the Universidade do Estado de Mato Grosso, an area with Oxisol (clay) in the months from March to May 2009. The experimental design was randomized blocks arranged in a 3x4 factorial (cultivars x dose) with four replications. We evaluated the following agronomic characteristics: circumference of the plant (CP), total fresh mass (TFM), fresh commercial mass (FCoM), head fresh weight (HFW), stem diameter (SD), number of marketable leaves (NML), stem length (SL) and total number of leaves (TNL). The cultivars Júlia and Tainá responded to fertilization with filter cake until the dose of 40 ton -1. The cultivar Grandes Lagos responded to fertilization with filter cake until the dose of 35 t ha -1 for TFM and HFW and up to 40 ton ha -1 for FCoM. The cultivar Grandes Lagos had the best performance in TFM, FCoM, CP and SL compared to others cultivars, and equated with the cultivar Tainá in HFW and NML and with the cultivar Julia in SD. All cultivars had similar behavior in TNL. The organic fertilization with filter cake increases the productivity of cultivars of lettuce.

Loading UNEMAT collaborators
Loading UNEMAT collaborators